Sealing arrangement for a wheel bearing

Patent metadata

Field	Value
Publication number	US-12049924-B2
Application number	US-202017782199-A
Country	US
Kind code	B2
Filing date	Nov 5, 2020
Priority date	Dec 16, 2019
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

A sealing arrangement for a wheel bearing having a first bearing part and a second bearing part integrally connected to a wheel bearing flange, and rolling bodies being guided between said bearing parts, includes a carrier element and a stop part. The carrier element is connected to the first bearing part, an elastic element is provided on the carrier element, and the carrier element has a fastening section connected to the first bearing part. The elastic element has a sealing lip. The stop part is fastened to the second bearing part and in sliding contact with the sealing lip. The wheel bearing flange has an axial projection provided such that the projection protrudes in the direction of a cavity formed by an axial projection of the first bearing part. An inner surface of the axial projection of the wheel bearing flange forms a seat for the stop part.

First claim

The invention claimed is:

1. A sealing arrangement for a wheel bearing having a first bearing part and a second bearing part integrally connected to a wheel bearing flange, rolling bodies being guided between said bearing parts, the sealing arrangement comprising the following:
a carrier element which is connected to the first bearing part, an elastic element being provided on the carrier element, the elastic element having at least one sealing lip, and in that the carrier element has a fastening section connected to the first bearing part,
a stop part which is fastened to the second bearing part and with which the at least one sealing lip is in sliding contact,
the wheel bearing flange having an axial projection, wherein the axial projection of the wheel bearing flange is provided such that said projection projects in the direction of a cavity formed by an axial projection of the first bearing part, and wherein an inner surface of the axial projection of the wheel bearing flange forms a seat for the stop part, wherein the axial projection of the wheel bearing flange is axially spaced from and does not overlap the axial projection of the first bearing part when viewed in a radial direction.

2. The sealing arrangement according to claim 1 , wherein an end face of the axial projection of the wheel bearing flange and an end face of the first bearing part form a labyrinth seal.

3. The sealing arrangement according to claim 1 , wherein the carrier element is fastened to the fastening section on an inner peripheral surface of the first bearing part.

4. The sealing arrangement according to claim 1 , wherein the carrier element is designed in such a way that it forms a free space and wherein a cage for the rolling bodies projects into this free space.

5. The sealing arrangement according to claim 1 , wherein at least one first drainage channel is provided on an outer peripheral surface of the elastic element.

6. The sealing arrangement according to claim 5 , in which the elastic element provides a sealing lip which delimits the first drainage channel.

7. The sealing arrangement according to claim 1 , wherein the wheel bearing flange is formed with a radially extending side face and an outer surface adjoining rolling body raceways on the second bearing part, and a radial or axial circumferential groove is arranged in a transition region between the outer surface and the side face.

8. The sealing arrangement according to claim 7 , wherein a groove base of the groove is formed with at least one radius.

9. The sealing arrangement according to claim 8 , wherein a free space is formed between the stop part and the groove base.

10. The sealing arrangement according to claim 1 , wherein at least one second drainage channel is provided on an outer peripheral surface of the first bearing part.

11. A sealing arrangement for a wheel bearing, the wheel bearing comprising:
a first bearing part comprising an axial projection and an inner peripheral surface;
a second bearing part, comprising a wheel bearing flange, the wheel bearing flange comprising an axial projection protruding towards a cavity formed by the first bearing part axial projection, and a seat; and
rolling bodies disposed between the first bearing part and the second bearing part;

the sealing arrangement comprising:
a carrier element comprising a fastening section fastened to the inner peripheral surface;
a stop part fastened to the second bearing part at the seat; and
an elastic element arranged on the carrier element and comprising a first sealing lip in sliding contact with the stop part, wherein the axial projection of the wheel bearing flange is axially spaced from and does not overlap the axial projection of the first bearing part when viewed in a radial direction.

12. The sealing arrangement of claim 11 , wherein:
the first bearing part further comprises an end face; and
the wheel bearing flange axial projection comprises an end face; and
the first bearing part end face and the wheel bearing flange axial projection end face form a labyrinth seal.

13. The sealing arrangement of claim 11 , wherein:
the carrier element forms a free space; and
the wheel bearing further comprises a cage that projects into the free space.

14. The sealing arrangement of claim 11 , further comprising a first drainage channel disposed on an outer peripheral surface of the elastic element.

15. The sealing arrangement of claim 14 , further comprising a second sealing lip, wherein the second sealing lip delimits the first drainage channel.

16. The sealing arrangement of claim 11 further comprising a second drainage channel, wherein:
the first bearing part comprises an outer peripheral surface; and
the second drainage channel is disposed on the outer peripheral surface.

17. A sealing arrangement for a wheel bearing, the wheel bearing comprising:
a first bearing part comprising an axial projection;
a second bearing part, comprising a wheel bearing flange, the wheel bearing flange comprising an axial projection protruding towards a cavity formed by the first bearing part axial projection, and a seat; and
rolling bodies disposed between the first bearing part and the second bearing part;
the sealing arrangement comprising:
a carrier element comprising a fastening section connected to the first bearing part;
a stop part fastened to the second bearing part at the seat; and
an elastic element arranged on the carrier element and comprising a first sealing lip in sliding contact with the stop part, wherein:
the axial projection of the wheel bearing flange is axially spaced from and does not overlap the axial projection of the first bearing part when viewed in a radial direction;
the second bearing part further comprises a rolling body raceway;
a portion of the wheel bearing flange facing the rolling bodies comprises a radially extending side face and an outer surface adjoining the rolling body raceway;
the outer surface receives the stop part; and
a radial circumferential groove or an axial circumferential groove is arranged in a transition region between the outer surface and the radially extending side face.

18. The sealing arrangement of claim 17 wherein the groove comprises a groove base formed with a radius.

19. The sealing arrangement of claim 18 further comprising a free space formed between the stop part and the groove base.

Assignees

• Schaeffler Technologies Ag

Inventors

• Huelz Christian
• Katana Branko
• Gessner Felix
• Becker Andreas
• Krapf Marco

Classifications

• F16C33/783

  of the mounting region · CPC title

• F16C33/7876

  with sealing lips · CPC title

• F16C33/7879 Primary

  with a further sealing ring · CPC title

• F16C33/7806 Primary

  for spherical roller bearings · CPC title

• F16C2326/02

  Wheel hubs or castors · CPC title